This article will focus on income tax deficiency and collection due process (CDP) jurisdiction, but the Tax Court also has jurisdiction over IRS’s denial or refusal to act on abatement of interest under IRC §6404 and innocent spouse cases under §6015; cases related to employment status; and denial of whistleblower claims, among others. The Tax Court was established to handle tax deficiency cases that require a timely filed notice of defic... Sherrill Trovato, EA, USTCP